Working at UPS: good for bass playersq

I'm into my third week, working unload at UPS, and I've gone against everyone's reccomendation and unloaded trucks barehanded. Well, I'm finally able to do what I've not been able after two years of bass playing....develop callouses. I know it sounds stupid, but it feels so much better to play bass after handling 5000-6000 packages a night, then washing them.